基于Simulink的溶液除湿蒸发冷却新风系统性能分析  

PERFORMANCE ANALYAIS OF SOLUTION DEHUMIDIFICATION EVAPORATIVE COOLING FRENSH AIR SYSTEM BASED ON SIMULINK

作　　者：周君明[1] 彭冬根[1] 黄红[1] Zhou Junming;Peng Donggen;Huang Hong(School of Architectural Engineering, Nanchang University, Nanchang 330031, China)

机构地区：[1]南昌大学建筑工程学院

出　　处：《太阳能学报》2018年第6期1533-1542,共10页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51266010);江西省科技支撑计划(20123BBG70195);南昌大学研究生创新专项(cx2015071)

摘　　要：利用Simulink软件建立余热驱动溶液除湿蒸发冷却新风系统的模拟仿真平台,通过模型模拟研究余热驱动溶液除湿蒸发冷却新风系统工作特性。综合分析传热单元数NTUm、余热热水温度及流量、空气质量流量、溶液质量流量、室外新风参数对系统的影响。研究结果表明,系统部件AAHX2、RHX、DHX的NTUm对系统性能影响较大,确定各组成部件NTUm优选范围,为了满足送风效果及节能要求,其他系统影响因素的控制范围宜为：再生器热水温度不宜低于60℃、热水质量流量不宜超过0.6 kg/s、空气质量流量宜取0.25-0.4 kg/s、溶液质量流量宜取0.36-0.6 kg/s、室外空气温度不宜超过40℃、室外空气含湿量不宜超过0.024 kg/kg,系统平均热力系数ζ高达0.8,研究成果可为该类系统的设计应用提供理论参考。The Simulink software was used to establish simulating platform for solution dehumidification evaporativecooling fresh air system driven by waste heat,the operation performance of solution dehumidification evaporative coolingfresh air system driven by waste heat was studied through model simulation. The effect of the number of heat transferunits NTUm,residual hot water temperature and flow,air mass flow,solution mass flow,outdoor fresh air parameters onthe system was comprehensively analyzed. The research results show that the effect of system components AAHX2＇s,RHX＇s,DHX＇s NTUmon system performance is bigger,which determines the optimal range of each component NTUm.In order to meet the air supply effect and energy saving requirements,the control range of other system influence factorsshould be：hot water temperature of regenerator should not be lower than 60 ℃,hot water mass flow rate should not bemore than 0.6 kg/s,air mass flow should take 0.25-0.40 kg/s,solution mass flow rate should be 0.36-0.60 kg/s,outdoorair temperature should not be more than 40 ℃,outdoor air moisture content should not be over 0.024 kg/kg,the averagethermal coefficient ζ is high up to 0.8. The research achievement can provide theoretical reference for the design andapplication of this kind of system.

关 键 词：SIMULINK 溶液除湿 蒸发冷却 NTUm 

分 类 号：TK511.3[动力工程及工程热物理—热能工程]